9684690981 has 8 divisors (see below), whose sum is σ = 14757624384. Its totient is φ = 5534109120.

The previous prime is 9684690979. The next prime is 9684690989. The reversal of 9684690981 is 1890964869.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9684690981 - 2¹ = 9684690979 is a prime.

It is a super-2 number, since 2×9684690981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9684690989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230587860 + ... + 230587901.

It is an arithmetic number, because the mean of its divisors is an integer number (1844703048).

Almost surely, 2^9684690981 is an apocalyptic number.

It is an amenable number.

9684690981 is a deficient number, since it is larger than the sum of its proper divisors (5072933403).

9684690981 is a wasteful number, since it uses less digits than its factorization.

9684690981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461175771.

The product of its (nonzero) digits is 6718464, while the sum is 60.

The square root of 9684690981 is about 98410.8275597762. The cubic root of 9684690981 is about 2131.5486823896.

The spelling of 9684690981 in words is "nine billion, six hundred eighty-four million, six hundred ninety thousand, nine hundred eighty-one".